DE68908008T2 - Electro-hydraulic control system of a helicopter with individual control of each blade. - Google Patents

Electro-hydraulic control system of a helicopter with individual control of each blade.

Info

Publication number
DE68908008T2
DE68908008T2 DE89303650T DE68908008T DE68908008T2 DE 68908008 T2 DE68908008 T2 DE 68908008T2 DE 89303650 T DE89303650 T DE 89303650T DE 68908008 T DE68908008 T DE 68908008T DE 68908008 T2 DE68908008 T2 DE 68908008T2
Authority
DE
Germany
Prior art keywords
helicopter
electro
blade
control system
hydraulic control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE89303650T
Other languages
German (de)
Other versions
DE68908008D1 (en
Inventor
Zafer N Khan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kaman Aerospace Corp
Original Assignee
Kaman Aerospace Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kaman Aerospace Corp filed Critical Kaman Aerospace Corp
Publication of DE68908008D1 publication Critical patent/DE68908008D1/en
Application granted granted Critical
Publication of DE68908008T2 publication Critical patent/DE68908008T2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/54—Mechanisms for controlling blade adjustment or movement relative to rotor head, e.g. lag-lead movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/54—Mechanisms for controlling blade adjustment or movement relative to rotor head, e.g. lag-lead movement
    • B64C27/72—Means acting on blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/54—Mechanisms for controlling blade adjustment or movement relative to rotor head, e.g. lag-lead movement
    • B64C27/72—Means acting on blades
    • B64C2027/7205—Means acting on blades on each blade individually, e.g. individual blade control [IBC]
    • B64C2027/7211—Means acting on blades on each blade individually, e.g. individual blade control [IBC] without flaps
    • B64C2027/7216—Means acting on blades on each blade individually, e.g. individual blade control [IBC] without flaps using one actuator per blade
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/30—Wing lift efficiency

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
DE89303650T 1988-05-16 1989-04-12 Electro-hydraulic control system of a helicopter with individual control of each blade. Expired - Fee Related DE68908008T2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/194,400 US4899641A (en) 1988-05-16 1988-05-16 Electro-hydraulic helicopter system having individual blade control

Publications (2)

Publication Number Publication Date
DE68908008D1 DE68908008D1 (en) 1993-09-09
DE68908008T2 true DE68908008T2 (en) 1993-11-18

Family

ID=22717459

Family Applications (1)

Application Number Title Priority Date Filing Date
DE89303650T Expired - Fee Related DE68908008T2 (en) 1988-05-16 1989-04-12 Electro-hydraulic control system of a helicopter with individual control of each blade.

Country Status (3)

Country Link
US (1) US4899641A (en)
EP (1) EP0342791B1 (en)
DE (1) DE68908008T2 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5409183A (en) * 1993-08-06 1995-04-25 Kaman Aerospace Corporation Helicopter with leading edge servo flaps for pitch positioning its rotor blades
US5678786A (en) * 1995-12-06 1997-10-21 Mcdonnell Douglas Helicopter Co. Reconfigurable helicopter flight control system
US5897293A (en) * 1996-11-22 1999-04-27 United Technologies Corporation Counterweighted propeller control system
WO2007079973A1 (en) * 2005-12-29 2007-07-19 Georg Hamann Device and system for producing regenerative and renewable hydraulic energy
US8608441B2 (en) 2006-06-12 2013-12-17 Energyield Llc Rotatable blade apparatus with individually adjustable blades
US7786684B2 (en) * 2007-10-22 2010-08-31 Honeywell International Inc. Electromechanical flight control system and method for rotorcraft
US9248909B2 (en) 2013-07-23 2016-02-02 Sikorsky Aircraft Corporation Swashplateless coaxial rotary wing aircraft
US10029781B2 (en) * 2015-08-03 2018-07-24 The Boeing Company Shape memory alloy-actuated propeller blades and shape memory alloy-actuated propeller assemblies
DK3565974T3 (en) * 2017-03-17 2021-07-26 Ie Assets Gmbh & Co Kg HYDRAULIC TURNING PERFORMANCE
RU2685115C1 (en) * 2018-01-22 2019-04-16 Акционерное общество "Павловский машиностроительный завод "ВОСХОД"-АО "ПМЗ "ВОСХОД" Unit of combined hydraulic actuators

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB759098A (en) * 1954-06-29 1956-10-10 Taylor & Sons Manchester Ltd F Improvements in or relating to rotary fluid-supply couplings
FR1204772A (en) * 1958-08-04 1960-01-28 Pompes Soc D Expl De Rotary distributor seal
US3242992A (en) * 1964-09-25 1966-03-29 United Aircraft Corp Feedback system
DE1938596C3 (en) * 1969-07-30 1974-02-07 Deutsche Babcock & Wilcox Ag, 4200 Oberhausen Device for supplying pressurized oil to a rotating machine with hydraulically operated actuators
FR2230241A5 (en) * 1973-05-14 1974-12-13 Sigma Diesel Rotating joint for lathe turret - has series of annular lubricating oil grooves in rotating sleeve
DE2832898C2 (en) * 1978-07-27 1985-12-19 Messerschmitt-Bölkow-Blohm GmbH, 8012 Ottobrunn Irreversible hydraulic actuator
FR2437512A1 (en) * 1978-09-28 1980-04-25 Ppm Sa Rotatable joint for multiple hydraulic circuits - has parallel holes in inner cylinder connected to grooves in outer sleeve
US4445421A (en) * 1981-11-06 1984-05-01 The Charles Stark Draper Laboratory, Inc. Helicopter swashplate controller
SE455629B (en) * 1986-11-25 1988-07-25 Flygt Ab rotary joint

Also Published As

Publication number Publication date
US4899641A (en) 1990-02-13
EP0342791A2 (en) 1989-11-23
EP0342791A3 (en) 1990-08-29
EP0342791B1 (en) 1993-08-04
DE68908008D1 (en) 1993-09-09

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee